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Monolithic InP receiver chip with a 90° hybrid and a variable optical attenuator for 100GBit/s colourless WDM detection

: Runge, P.; Schubert, S.; Seeger, A.; Gärtner, T.; Janiak, K.; Stephan, J.; Trommer, D.; Lonstrup Nielsen, M.


Institute of Electrical and Electronics Engineers -IEEE-:
25th International Conference on Indium Phosphide and Related Materials, IPRM 2013. Proceedings : Held 19-23 May 2013, Kobe, Japan
Piscataway/NJ: IEEE, 2013
ISBN: 978-1-4673-6130-9 (Print)
ISBN: 978-1-4673-6131-6 (Online)
ISBN: 978-1-4673-6132-3
International Conference on Indium Phosphide and Related Materials (IPRM) <25, 2013, Kobe>
Conference Paper
Fraunhofer HHI ()

We demonstrate a monolithically integrated quadrature coherent receiver photonic integrated circuit (PIC) on an InP substrate with a 90° optical hybrid, a variable optical attenuator (VOA) and four pin-photodetectors. With an attenuation of more than 20dB the VOA enables the usage of the receiver PIC for colourless WDM detection.